原稿-電液比例變量柱塞泵的動(dòng)態(tài)特性仿真

1、I摘要電液比例變量柱塞泵以其節(jié)能，控制精確，頻響高和壽命長(zhǎng)的特點(diǎn)，被廣泛應(yīng)用于冶金、礦山、鍛壓、工程機(jī)械、船舶等領(lǐng)域。作為液壓系統(tǒng)的重要?jiǎng)恿υ?，電液比例變量柱塞泵效率的提高，控制性能的改進(jìn)是液壓領(lǐng)域研究的一個(gè)重要課題。本文針對(duì)電液比例變量泵，在matlab中建立變量泵系統(tǒng)的完整仿真模型。通過(guò)分別對(duì)壓力控制和流量控制的動(dòng)態(tài)特性仿真，揭示了變量泵主要結(jié)構(gòu)參數(shù)對(duì)系統(tǒng)在兩種控制方式下輸出動(dòng)態(tài)特性的影響規(guī)律。通過(guò)改進(jìn)流量控制油路，使得系統(tǒng)流量調(diào)

2、節(jié)所需的最低輸出壓力大幅減小。本文設(shè)計(jì)了變量泵的恒功率控制方案，并進(jìn)行了仿真分析，最后針對(duì)變量泵壓力控制輸出超調(diào)量大的問(wèn)題，采用不同控制策略。關(guān)鍵詞：電液比例制；軸向柱塞泵；matlab；恒功率控制AbstractElectrohydraulicproptionalvariablepistonpumphasacteristicsofenergysavingprecisecontrolhighfrequencyresponselongse

3、rvicelife.Itiswidelyusedinmetallurgyminingfgingconstructionmachineryshipbuildingindustry.Asdrivecomponentofthehydraulicsystemhowtoincreasetheefficiencyofpumpsimprovethecontrolperfmanceofthesystemisanimptantresearchsubjec

4、tinhydraulicfields.Thewholesimulationmodelofelectrohydraulicproptionalvariablepumpwasestablishedbasedonthematlabsoftwareinthepaper.Thedynamicsimulationofpressurecontrolflowcontrolofthesystemwascarriedthroughtheinfluences

5、ofmainstructuralparametersofvariablepumponsystemoutputdynamicacteristicsintwocontrolmodeswererevealedthroughsimulationanalysis.ThelowerlimitoftheoutputpressureflowcontrolisreducedgreatlybyimprovingcontroloilcircuitsThesc

6、hemeofconstantpowercontrolwasdesignedinthepapersimulationanalysiswerecarriedthrough.Finally，tosolvetheovershootoftheoutputpressureinpressurecontrol。KeyWds：Electrohydraulicproptionalcontrol；axialpistonpump；matlab；constant

7、powercontrolIII4.1.4比例換向閥閥芯質(zhì)量對(duì)系統(tǒng)輸出壓力的影響................................324.2控制柱塞結(jié)構(gòu)參數(shù)對(duì)系統(tǒng)輸出壓力的影響........................................334.2.1控制柱塞閥芯直徑對(duì)系統(tǒng)輸出壓力的影響...................................334.2.2控制柱塞彈簧剛度對(duì)系統(tǒng)輸出壓力的影響.

8、..................................344.3斜盤(pán)轉(zhuǎn)動(dòng)慣量對(duì)系統(tǒng)輸出壓力的影響...............................................364.4本章小結(jié).............................................................................................36結(jié)論............